Re: [gentoo-dev] Re: [gentoo-commits] gentoo-x86 commit in www-plugins/adobe-flash: metadata.xml adobe-flash-11.2.202.228.ebuild ChangeLog

[Jim Ramsay]

On Thu, May 10, 2012 at 01:10:48PM -0400, Jim Ramsay wrote:
> On Thu, Apr 26, 2012 at 05:06:45PM -0300, Alexis Ballier wrote:
> > wouldnt adding a sse2 useflag and putting it in REQUIRED_USE solve the
> > problem ?
> >
> > afaik portage wont even try to upgrade if people have -sse2
>
> This is an interesting idea, as it could automatically downgrade users to
> 10.3 without requiring any masking.  I like that.

Hmmm... After some testing, I don't think this is how it works.

It looks to me like if I try to do an upgrade on a system that has
USE=-sse2, it doesn't downgrade automatically.  Nor does it simply skip
the upgrade.  At least with portage 2.1.10.57, I get the following fatal
output:

-------
# USE=-sse2 emerge -uDN world -p
...

!!! Problem resolving dependencies for www-plugins/adobe-flash from
@selected ... done!

!!! The ebuild selected to satisfy "www-plugins/adobe-flash" has unmet
requirements.
- www-plugins/adobe-flash-11.2.202.235::local USE="64bit (multilib)
  -32bit -kde -sse2 -vdpau"

    The following REQUIRED_USE flag constraints are unsatisfied:
        sse2

	(dependency required by "@selected" [set])
	(dependency required by "@world" [argument])
-------

So in light of this, I think I'm going to keep the fatal pkg_pretend
with /proc/cpuinfo check in the 11.2 ebuild, since that's the only way I
can do the check in a way that meets my 3 requirements:
 -> No annoyance for users who have sse2 instructions present
 -> runs at install time in a non-ignorable (fatal) way
 -> provides useful downgrade instructions to the user

Too bad pkg_pretend doesn't fire during 'emerge -p' -> That would be
even better.

Any other suggestions on how I can make this work better?

-- 
Jim Ramsay